KPMI, valve springs kit. 0.460" lift. Steel upper retainers

Reduces the total mass of the valvetrain. Ideal for high-performance builds with high-lift cams. The springs are made from the highest quality chrome silicon wire, shot-peened and heat treated to maximise fatigue life. The kit includes springs, upper retainers, lower retainers and valve keys. Maximum valve lift: .480". Installed height: 1.310". Seat pressure: 158 lbs. Open pressure: 340 lbs. @ .480" valve lift.
Note: The kit must be used with Kibblewhite Precision Engineering (KPMI) valve guides. Stock valve guides must be shortened. Machining instructions for the valve guides are included with this kit.


Specifications


Brand
Kibblewhite


Application
36-47 Knucklehead (NU)


Sales unit
Kit


Material
Steel


Packaging weight
0.431 kg


HS Code
84099100


Motorcycle family
BIG TWIN


Original name
KPMI, valve spring kit. .460" lift. Steel top collars